[lkml]   [2018]   [Oct]   [16]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
Patch in this message
Subject[PATCH 4.14 029/109] net/mlx5e: Set vlan masks for all offloaded TC rules
4.14-stable review patch.  If anyone has any objections, please let me know.


From: Jianbo Liu <>

[ Upstream commit cee26487620bc9bc3c7db21b6984d91f7bae12ae ]

In flow steering, if asked to, the hardware matches on the first ethertype
which is not vlan. It's possible to set a rule as follows, which is meant
to match on untagged packet, but will match on a vlan packet:
tc filter add dev eth0 parent ffff: protocol ip flower ...

To avoid this for packets with single tag, we set vlan masks to tell
hardware to check the tags for every matched packet.

Fixes: 095b6cfd69ce ('net/mlx5e: Add TC vlan match parsing')
Signed-off-by: Jianbo Liu <>
Reviewed-by: Or Gerlitz <>
Signed-off-by: Saeed Mahameed <>
Signed-off-by: Greg Kroah-Hartman <>
drivers/net/ethernet/mellanox/mlx5/core/en_tc.c | 3 +++
1 file changed, 3 insertions(+)

--- a/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
+++ b/drivers/net/ethernet/mellanox/mlx5/core/en_tc.c
@@ -864,6 +864,9 @@ static int __parse_cls_flower(struct mlx
MLX5_SET(fte_match_set_lyr_2_4, headers_c, first_prio, mask->vlan_priority);
MLX5_SET(fte_match_set_lyr_2_4, headers_v, first_prio, key->vlan_priority);
+ } else {
+ MLX5_SET(fte_match_set_lyr_2_4, headers_c, svlan_tag, 1);
+ MLX5_SET(fte_match_set_lyr_2_4, headers_c, cvlan_tag, 1);

if (addr_type == FLOW_DISSECTOR_KEY_IPV4_ADDRS) {

 \ /
  Last update: 2018-10-16 19:19    [W:0.274 / U:1.196 seconds]
©2003-2018 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site